\testfile{pgfplotstest.expr.tex}
\testsection{`plot expression' test}
\testsubsection{sin(x)}
\starttikzpicture
\startaxis
\addplot (\x,{sin(\x r)});
\stopaxis
\stoptikzpicture

\testsubsection{$x^2$}
\starttikzpicture
\startaxis
\addplot plot[domain=0:10] (\x,\x^2);
\stopaxis
\stoptikzpicture
